Comments for N6CChttp://www.n6cc.com
NAVY 6 COMBAT COMMSThu, 12 Sep 2019 16:51:19 +0000hourly1https://wordpress.org/?v=4.9.3Comment on Ancient Heathkit Oscilloscope by Timhttp://www.n6cc.com/ancient-oscilloscope#comment-615072
Thu, 12 Sep 2019 16:51:19 +0000http://www.n6cc.com/?p=2689#comment-615072Hi Zach – When I first started looking at this scope I had found the schematic for the conversion kit online – but I can’t find it now. If you have the schematic for the O-9 scope it probably includes those changes, notably the 2 VR tubes. The conversion circuit is probably still online someplace, there are many Heathkit websites to try…
Tim
]]>Comment on Ancient Heathkit Oscilloscope by Zach KI5BXHhttp://www.n6cc.com/ancient-oscilloscope#comment-614854
Wed, 11 Sep 2019 15:29:03 +0000http://www.n6cc.com/?p=2689#comment-614854I have just purchased one of those Heathkit 0 – 8 oscilloscopes. Do you have any information on that c – 08 addition like schematics or anything I have the schematic for 08 and 09 but they don’t include that little add-on if you have that information I would greatly appreciate it.
]]>Comment on AN/GRC-9 Radio Set by Timhttp://www.n6cc.com/angrc-9-radio-set#comment-614714
Tue, 10 Sep 2019 22:15:46 +0000http://www.n6cc.com/?p=21#comment-614714Hi Bronek – That’s a problem I have not seen (yet). Are you saying the Screen and Suppressor voltages on the Octal test socket are about one-half rated but the voltages on the actual tube socket pins are OK?
You might start by looking for leaky capacitors, C-114 for the PA Grid and C-117 for the PA Suppressor problem. C-142 for the Doubler stage for low grid drive. If they are leaky that could pull down the associated voltages.

Please let us know what you may discover!
Tim

]]>Comment on AN/GRC-9 Radio Set by Bronek Wedzicha M0DAFhttp://www.n6cc.com/angrc-9-radio-set#comment-614391
Sun, 08 Sep 2019 21:28:46 +0000http://www.n6cc.com/?p=21#comment-614391Excellent photos and story! My GRC-9 works fine except for low drive to the control grid of the final and suppressor grid as measured via the octal socket. The voltages are about half of what is specified. This messes up modulation as well. Otherwise DC voltages are as per manual, including those on the pins of the tubes. I have replaced all tubes. The drive is similar on all three bands. I wonder if you or others have come across this fault and managed to rectify. Thank you.
]]>Comment on Military Vehicles and Radios MVCC/MRCG by Jeff Ridderhttp://www.n6cc.com/military-vehicles-and-radios-mvccmrcg#comment-612487
Wed, 28 Aug 2019 21:33:54 +0000http://www.n6cc.com/?p=13543#comment-612487I am looking for a US Navy TBW(TBW-5) Transmitter set. anyone have any leads on who might have a complete set for sale.
Thank you
V/r
Jeff, KD0JDN
]]>Comment on Stealthy / Covert Antennas by Resources regarding stealth antennas. – Bryan Amateur Radio Clubhttp://www.n6cc.com/tactical-antenna-systems#comment-612000
Mon, 26 Aug 2019 02:46:18 +0000http://www.n6cc.com/?p=2100#comment-612000N6CC stealth antennas: http://www.n6cc.com/tactical-antenna-systems#
]]>Comment on AN/VRC-10 / RT-68 Transmitter-Receiver by Timhttp://www.n6cc.com/vrc-10-rt-68-transceiver#comment-611976
Mon, 26 Aug 2019 00:50:38 +0000http://www.n6cc.com/?p=3682#comment-611976Hi Dennis – I don’t know (I don’t have one). You might try the Manual (TM11-284). I’m sure it’s in there….
Tim
]]>Comment on AN/VRC-10 / RT-68 Transmitter-Receiver by dennis M semonickhttp://www.n6cc.com/vrc-10-rt-68-transceiver#comment-611953
Sun, 25 Aug 2019 22:24:55 +0000http://www.n6cc.com/?p=3682#comment-611953Hi off the top of your head do you the the dimension of the MT-297 radio mount H,W,L thanks for any help ka9dzr Dennis
]]>Comment on Collins 618F-1A VHF Aircraft Transceiver by Timhttp://www.n6cc.com/collins-618f-1a-vhf-aircraft-transceiver#comment-611421
Wed, 21 Aug 2019 17:35:41 +0000http://www.n6cc.com/?p=3420#comment-611421Hi Michael – I will send you the two schematic files via PM. Good luck with your project and thanks for stopping by!
73, Tim
]]>Comment on Collins 618F-1A VHF Aircraft Transceiver by Michael Kane VK4ZKThttp://www.n6cc.com/collins-618f-1a-vhf-aircraft-transceiver#comment-611340
Wed, 21 Aug 2019 01:49:31 +0000http://www.n6cc.com/?p=3420#comment-611340Hello Tim
I read with interest your efforts in reviving the Collins 618F-1. I have two of these and the matching 427D IF/Audio/ PS. I have revived many obscure pieces of aircraft equipment and wish to avoid if possible the nightmare of working out the interconnections without schematics. As previous correspondence seems to indicate you have schematics, it would be greatly appreciated if you could assist me with these if possible. I am just in the process of reviving a Collins 18s-4